Switch-stand lock



N. J. BECKNER.

SWITCH STAND LOCK.

APPLICATION FILED NOV. 27, 1920.

1,384,505. Patented July 12, 1921.

3 SHEETS-SHEET l.

3 x M: I 'lrrmu W MJZW N. I. BECKNER.

SWITCH STAND LOCK.

APPLICATION FILED NOV. 27' I920.

1,384,505. Patented July 921.

3 SHEETS- 11 0471 ffizzzb wa" N J. BECKNER.

SWITCH STA-ND LOCK, APPLICATIQN FILED NOV. 21. 1920.

1,384,505. Patentd July 12, 1921.

3 SHEETS-SHEET 3- UNITED STATES NOAH J. BEoKNEn, or SEATTLE, wnsnmerron,nssrenon T0 rnoonnssrvj;

COMMODITY ooMrAnY, or sEA'rrL wasnmoron.

1,384,505. Specification of To aZZ whom it may concern Be it known thatI, NOAH J. BEGKNER, a citizen of the United States, residing at Seattle,in the county of King and State of Washington, have invented certain newand useful Improvements in Switch Stand Locks, of which the following isa specification, reference being had to the accompany. ing drawings.

This invention relates to switch stands, and particularly to locks forlocking the operating lever of the switch stand in a depressed ordepending position, thus preventing the switch from being thrown untilthe lover or handle is unlocked and raised to its operative orhorizontal position.

The general purpose of my invention is to provide a lock for the leversorhandles ofswitch stands which is shiftedv to an un locked position bya key, which is further so constructed that'the key cannot be withdrawnuntil the lever has been again turned to a vertical position, and whichhas a cover or shield for the keyhole normally disposed over thekeyhole.

iv loreparticularly, one object of my invention is to provide a switchstand lock wherein the lever is prevented from being shifted, to itshorizontal or operative position to shift the switch by an obstructionwithin the lock casing andacting to block the movement of theplever, andprovide key operated means whereby this obstruction may be removed frombehind the lever and permit the lever to be shifted- A further object isto provide a construction of this kind in which the parts of the lockare held in their locking position by a detaining device, this detainingdevice being partly shifted from its operative position by shiftingmovement given to the keyhole shield,the rotation of the key within thelock acting to further lift this detaining device and then acting tocause an operative engagement to be secured between the key and thelever obstructing memberto swing this lever obstructing member out ofits obstructing position.

And a further object is to provide a lock of this character with agravity actuated detainingmechanism, thus doing away with I the.necessity of using springs, these springs E, WASHINGTON, Aconrona'rxon'aor SWITGILSTAND LOCK.

Letters Patent. Patented July '12, 1921.

Application filed November 27., 1920. Serial No. 426,840.

being relatively costly, diflicult to secure of exactly the propertension, liable to break a when subjected to intense cold or variationsof temperature, and thus securing a greater life for thelock than iscommonly the case.

A still further object is to providea lock ofthis characterwith very fewworking parts, these parts being entirely housed and protected from theelements under all climatic conditions, the lock being constructed sothat 1t maybe applied to practically all makes of switch stands,andbeinggfurther so constructed that the key cannot be removed from thelock, until the lockvis p0siing position. V

Another object is. to provide a lockiof this character wherein the leveris prevented from being shifted when the lock is in its locking positionby a heavy ring forming a block and seatin against a suitable abutmenton the lock casingand disposed b'etween said abutment and the lever,andprovide key actuated means whereby this ring tivelyshifted to itsfully operative or look may be shifted to a raised position out of i theway of the lever and permitting the lever tofibe shifted touts-operativeposition without obstruction. i

Another and most important object of this invention is to so mountthering or 0bstructing member upon'the key actuated means supporting itthat this obstructing member is entirely free to have aslightindependent movement upon the key actuated support so that any shock orjar against the obstructing member caused, for instance, by

a sudden attempt tolift the switch operatlng-lever to itsoper-ativepositionwill not be transmitted. to the key actuatedmecha',

nism but will be borne solely by the obstructing member, thus preventingany strain being. put upon the journal post on which the key rotates andpreventing this journal post from being broken off or bent. And anotherob ect 18 to provide a lockmg deviceholding the obstructing memberi frombeing lifted .or shifted out of its opera a tive or obstructingposition, which locking device comprises a pivoted weight which must belifted by an actuation of the key acmated-mechanism, and in: thisconnection to provide means whereby, the weight may be partially liftedcomprising a shield plate pivoted to the outer casing of the lock andnormally urged by the weight over the keyhole, which shield plate mustbe shifted by the key before the key can be inserted in the keyhole andwhich thus acts to partially raise the weight, the weight being'raisedentirely from its locking position by the initial rotation of the keyactuated mechanism under the action of the key, this .welght not onlyacting as a lock normally preventportion ofthe switch stand showing thelock casing in elevation;

" Fig. is a vertical section on the line 3-3 of Fig. 2;

Fig. 41 is a section on the l1ne 4':4r of Fig. 3;

V Fig. 5 is a like view to Fig. 4:, but showing the parts in theirunlocked position;

-Fig. 6 is a perspective view of the key;

Fig. 7 is a perspective view of the keyhole shield;

Fig. 8 is a perspective view of the carrierfor the locking ring;

Fig. 9 is a perspective view of the key actuated device for shifting thecarrier;

Fig. 10 is a perspective view of the weight;

Fig. 11 is a fragmentary face view on a large scale of'the lockingmechanism.

Referring to Fig. 1, it will be seen that I have illustrated myinvention as applied to a switch stand of a usual type having a tabledO,upon which is mounted the usual blockhead'll which engages with the mastor vertical shaft 12 of the switch stand. The table is notched at, saytwo; points, as at 13, in the usual manner, and the blockhead isbifurcated at one end or otherwise formed to receive between it thelever 14: which is pivoted to said blockhead by the pivot bolt or likepivot element 15. The upper end of this lever is angularly bent withrelation to the body of the lever, as at 16, and is commonly perforatedadjacent its extremity for the insertion of apadlock. Ordinarily meansis provided on the switch stand itself whereby a padlocked staple orbolt may engage this perforation. When this lever 14 is turned to ahorizontal position it disengages from the notches 13 of the table 10and then the blockhead 11 may be oscillated over the face of the tableto oscillate the mast or shaft 12 in. the usual manner. So far I havedescribed a construction which is commonly found in almost all switchstands in use today on railroads.

The locking mechanism which I have devised is disposed entirely within ahousing 17 which is, of course, of metal, this housing having arelatively wide lower portion to receive upwardly extending lugs .18formed upon the blockhead 11. The housing-is held to these lugs by meansof cap bolts 19 and the outer faces of the opposite walls of the housingare formed to provide sockets 20 within which the heads of these capbolts are disposed when the cap bolts have been turned home. Thus thehousing is firmly and securely held upon the blockhead. One wall 21 ofthe housingextends straight upward, while the opposite wall extendsupward, as at 22, for a certain distance, then extends inward, and thenextends upward, as at 23. The top of the housing extends laterally fromthis wall 23, then downward, as at 24, then laterally, as at 25, to joinwith the upper end of the wall The wall 23 of the housing is thickened,as at 26, and extending through this thickened portion and pinnedthereto is an arbor or spindle 27 This spindle 27 is reducedin diameter,at 28, and is further reduced in diameter, as at 29, this reduced portion 29 extending out through a keyhole 30 in the wall 21 of thehousing. This reduced portion 29 is to provide a center upon which thelock operating key may be disposed and rotated. This keyhole 30is'normally covered by a keyhole shield 31 disposed upon the outer faceof the wall 21 and pivoted upon a pivot pin, bolt, stud, or like element32. This plate or shield 31, as illustrated in Fig. 7, is approximatelysegmental in form, and that edge of the plate remote from the pivotalcenter thereof is formed to provide an outwardly projecting flange 33,this flange and the adjacent edge face of the plate conforming in shapeto the shape of the keyhole and the shape of the key. This flangeextends to a, boss34 formed at one corner of the plate, and from thisboss extends inward a pin 35.. This pin 35 extends through a slot 36formed in the face plate or wall 21.

Projecting inward from the wall 21 is a stud, bolt or like device 37,upon which is mounted a detaining or looking weight, illustrated indetail in Fig. 10. This weight is, generally speaking, curved or angularin form and is formed at its free end to provide a nose 39 whichnormally, and when the weight is depressechengages over the pin 35 sothat if the shield 31 is oscillated upon its pivot from the dotted lineposition in Fig. 2 to the full line position in this figure, thepin 35will, bearing against the nose 39, act to lift the free end of theweight from the position shown in Fig. 4 to the position shown in Fig.5.

This gravity actuated detent or pivoted weight 38 is formed adjacent itshinged end with a laterally projecting detent face 40. It will be notedthat the tongue 39-is disposed to one side of themedialplane ofktheweighted detent 38 and that this detent face 40 is disposed tothe othersidelof this medial plane. of the weight between the body of the weightand the pivotal axis thereof. is slightly concave,'as at 41, theconcavity being formed .on .a relatively shortcurve, and the inner faceof the weight is concavely curved, as at42.

Mounted upon theportion 28 of the spindle and bearing against theshoulder at'the end of this reduced portion 28 is a sleeve 43, whichsleeve at one end carries a radially projecting arm 44 having alaterally projecting, somewhat elliptical and elongated head 45. Thissleeve 43 at its opposite end from the arm 44 is provided with asegmental head 46, one face 47 of which is approximately radiallydisposed and isadapted to coact with the detent face 40 of the weight38. The opposite end of the head 46 from the face 47 is formed with anupwardly extending arcuate lug 48.-

Also disposed upon the portion28of the spindle 27 and mounted forrotation there-' than is the butt end of the arm. 'This butt' endportion of the arm has its side face rounded, as at 52. Also projectingfrom the'hub or member 49 is a radial portion 53 carrying an outwardlyprojecting lug 54 which is disposed in a planeinward of the plane of thearm 51. As illustrated in Fig.

3, the arcuate lug 48 of the head 46 projects toward the front wall 21of the casing and into the path of movement of the lug 54, but the arm51 moves in a path of movement outward of the end of the arcuate lug 48.The extremity of this arm 51.is adapted to be engaged by the bit of.thekey whereby the switch lock is operated. This key is desig-- nated55, and the key has a tubular barrel to receive and rotate upon thereduced extremity of the spindle 27 and a bit 56 adapted to engage theextremity of the arm51.

' Carried upon the laterally projecting elliptical head 45 is arelatively heavy ring 57 and when the arm 44 extends downward and thelock is in itslocked position, this ring 57 The inner face ofthatportion curvature of the ring. The ring thus seats against the outerface of this lug. Any upward IHOVEIIIGIlt ofthe ringis prevented be-.

cause of the fact thattheupper part of the ring: touches againstwthe,relatively large portion of,the@ spindle 'or post 27 where it crossesthe plane of'movement of the ring 57 This ring or. obstructing element,when it is lIlltS lowered POSllZlOIl, has its lowermost portion lyingimmediately above the upper end ofthe switch operating lever 14, that isimmediately above the angular portion 16 of the switch operating lever1I1Cl,"l3h616f01'0, it.

will be obvious from-Fig. 4 that if an effort is made to turn the switchoperating lever from its depending vertical position to its horizontalposition to clear it from the notohes l?) in the switch stand, theangular portion ofthe lever will strike against the obstructing ring 57,and the further move ment of the lever will beublocked and that theleverqcannot be shifted to its horizontal and operative position untilthis ring has. beenmoved out of the way. Thisring is car-;

ried out of the way. by the arm 44 with its head 45, whichheadipro-jects into the ring,

as beforestated, and supports it, and this oscillation of thearm 44 tocarry thering into the position shown in full lines in Fig. 5

is accomplished by. turning the key, as will.

hereinafter appear.

InFigs. 5 and 11, it will be seen that the elliptical head 45 has alength lessthan the internal diameter of the annularobstructing member57 so that the obstructing member has a certain amount of play within.the ring andthe annular obstructing member. in the position shown inFig. 4 canbe shifted toward the abutment 58 without. bearing against orin any way affecting the locking mechanism. This is a very importantfeature of my lIlV8I1t]0I1, tI1Cl my reason for making this annularmember 57 loose upon the head 45and= larger than this head 45 and,

therefore, independently movable within limitsrelative to the head 45and to the arm 44 isthat when the lock is in its locked posi-' ti'on, asshown in Fig. 4, the annular member lies ldle uponthe head 45; andagainst the lugor abutment" 58. Now in case the switch lever 14 waspulled or jerked under great force and projected against the obstructingmember'57, there will be no other part of the lock which could possiblyhave any strain or tension of any nature whatsoever thrown upon it, butthe lever 14 would contact with the obstructing member atone side, whilethe other side of the obstructing member abutted againstithe lug orabutment58. Therefore, i

the lever, the ring, and theabutment member would be theionly parts putinto action any strain thrown upon it.

and no other part of the lock would have If this obstructing member 57was rigidly carried by the arm 44 and the head 45, then if the operatinglever was forced upward, thethrust would be carried to the journal post28 instead of borne entirely by the obstructing 'member 57 and the lug58, and this would cause the look to break down or soon get out ofworking order -b causing the journal post to break off an the whole lockwould be out of commission. Furthermore, by making the member 57annular, it can at all times be depended upon to operate properly. Nomatter in what position it falls, it is always in operative positionwith relation to the lug or abutment 58 and the lever 14.

It is particularly pointed out that in this construction the key cannotbe removed until the lever 14 has been returned to its verticalposition. The bit of the key is inserted between the lug 54 and the arm51. As a consequence, the key has positive engagement with the member 53which actuates the member 43. Therefore, if the key is backed up toremove it, the bit of the key must engage obvious'that the obstructingmember cannot return to its normal position, that is the position shownin Fig. 4, and hence the key cannot be turned to a positionwhere it canbe withdrawn. It is only when the lever 14 has been shifted back to theposition shown in Fig, 4 that the obstructing member can be rotated fromthe position shown in Fig.5 to that shown in Fig. 4 and the keywithdrawn, and it will be further seen that when the key is withdrawnthe weight 38 drops to the position shown in Fig; 4 and locks the partsinside and at the same time forcesthe cover 31 over the keyhole. Thisaction is very simple and yet verypositiveand is accomplished withoutthe'aid of a spring of any nature. The parts, as will be seen, are

very few and require but very little machine. work to manufacture.

I Inasmuch asthere is practically no strain on any of the parts exceptthe obstructing member 57 itself and the abutment 58, it is obvious thatit cannot readily get out of order and will last almost indefinitely.

Attention is called tov the fact that when the keyhole guard or'shield31 is shifted to insert the key, it lifts the weight 38to the positionshown in Fig. 11 but at this time. the

shoulder 40 is still in engagement with the shoulder 47 of th'epart 43and the parts are still locked. Upon a rotation of the. key,

however, the shoulder '52 and the curved outer face of thepart 51 act tolift the weight 38 entirely from behind the locking mechanism." It isalso to :be noted that both of the parts 49 and 43 with its head 46 arenecessary in order to c ause the lock to properly function. If the lockwere operated by an engagement of the key directly with the member 43and retained the weight to perform the duty of causing. the closing ofthe keyhole shield 31, it would be impossible to lift the shield to aposition where it uncovered the keyhole without completely unlocking themember 47- from the weight at point 40. By providing the part 49,however, and so forming it that it lifts the weight prior to engagingthe-part 43, I have tention is called to the fact that the weight.

38 performs a number of functions. It causes the shield 'to cover thekeyhole when the lock is in locked position and this with-- out thenecessity ofusing a spring. Thus the cover shield is held in its closedposition much more strongly than is possible with a spring, "as springstend to weaken and to break; Furthermore, the weight 38 forms a latchinasmuch as its shoulder 40 engages with the shoulder 47 and thuslatches the member 43 from any movement until mem ber 49 is rotated tocompletely release the weight. Furthermore, the weight 38 keeps themember 49 in such position that the lugs 51and'54 will be disposed onopposite sides of the keyhole so that" when the key is inserted tounlock the lock, these lugs 51 and 54 will always be in the properposition'for engagement withthe bit of the key. The weight of theobstructing member 47 would,

of course, form a lock for the switch stand.

lever, but if the weight 38 was eliminated there would be nothing tolock the obstruct ing member in its lowered position and only theobstructing member 57 could be dependedon. 'By providing the weight 38,however, the obstructing member is securely locked in its loweredposition until operated by the proper key; It will be obvious that theweight would be necessary to the apparatus without the meohanism' eventhough the shield 31 were omitted, butinasmuoh as in switch looks ashield for the keyhole opening is a standard requirement, such a shieldis provided and urged to its locked position by the weight 38, thisshield acting to relieve the key of the duty which it would otherwisehave toperform of entirely lifting the weight because as the shieldisishifted for the insertion of the key, it partially lifts the weightand the key has only to move a relatively small" distancebefore theweight is entirely lifted to completely free the locking mechanism.

It will be seen from Fig. 4: that the angular end 16 of the leverprojects out beyond the main body of the housing and, that this mainbody of the housing is provided with an outwardly projecting hood 59which extends outw rd and downward from the front end face of thehousing. It will thus be seen that all the parts of the lock and of thelever itself are fully protected against rain, sleet, ice, etc.

The general operation of this looking mechanism will be obvious fromwhat has gone before. Assuming that the lever 14 is in its depressed ordependent position with the angular end 16 extending in a horizontalposition and that thus the switch lever with the blockhead 11' arelocked from rotative movement in a horizontal plane, then at this timethe lever is held from any unlocking movement by the ring 5'7, whichseating as it does against the post or spindle 27 at one point andagainst the abutment 58 at another point, completely blocks the upwardand inward movement of the angular end of the lever. The lever 14 maymove aslight distance, but only a slight distance and not enough tocarry it out of the notch 18; At this time the member 46 or head on thetubular shaft 4L8 is held from any rotation accidentally or otherwiseby, the detent shoulder 40 of the weight 88 which bears against the"detent face 4-7 of the head 46. Therefore, it is impossible to turn thetubular shaft 13, the arm 44 and the ring 57. The nose 39 ofweight 38bears against the pin 35 andholds the shield 31 closed over the keyhole.

Now when it is desired to unlock thelock, the key 55 is used to forcethe guard or shield 31 laterally until the keyhole is disclosed. Thislateral movement of this shield or guard 31 acts to lift the weight 38 acertain distance, but 'while the two faces 1 1 and 17 move toward aposition of disengagement they do; not entirely disengage at this point.If new the key be rotated in a counter-clockwise direction, the bit 56will engage the end of the arcuate arm 51 and a rotation of the member50 will cause the lug54l to move into engagement with one end of the lug18. Just before the lug 54 comes into engagement with'the end of the lug4:8, the protuberant end 52 of arm 51 will engage the circular face 11and this will act to lift the weight sufliciently to disengage the faces40 and 17 so that when the lug 5 1 has engaged the lug 48, the far-es 47and 40 are disengaged from each other. Thus a continued movement of thekey causes the rotation of the hollow shaft 43 and thus, through its arm44, lifts the blocking ring 57 to its raised position, as indicated infull lines in Fig. 5, where it is entirely out of the way of the angularend 16 0f the lever 15. This permits the lever to be shifted to itshorizontal or operative position and the switch to be turned. The key isprevented from being withdrawn from the lock until the arm 4C4: has beenreturned to its dependent posit-ion, and obviously this arm. 4&4 cannotbe returned to this dependent position until the weight has been turnedto the position shown in Fig. 1, and this is not possible until theswitch stand handle or lever has been turned to its dependent position.Thus the key cannot be withdrawn from the lock until the parts of thelock have been shifted to their looking position. Then and only then canthe key be withdrawn. .Of course, as soon'as the key is turned in acounter-clockwise direction to return the parts to their original orlooking position, the weight will tend to fall and will bear against thepin 35 and urge the shield plate 31 toits closed position, but it canonly shift tothis closed position when the key has been withdrawn fromthe look.

1. The combination with an operating member movable into or out of anoperative position, of means forpreventing the movement of the memberfrom its inoperative position including a rigid abutment dis posed inspaced relat on to the operating afkey operatedobstructing membermovable into the space between the abutment and the operating member orout of such space, a weight oper'atively engaging said obstructingmember and locking the obstructing member from movement out of itsobstructing position, and key actuated means for lifting the weight outof its obstructing position. x 2. The combination. with an operatingmember movable into or out of an inoperative position, of means forpreventing the movement of the, member from its inoperative positionincluding a rigid abutment disposed in spaced relation to the operatingmember, an obstructing member adapted to be disposed between theabutment and the operating member, and key operated means for shiftingthe obstructing member into or" out of its obstructing position and uponwhich the obstructing member is loosely mounted for independentmovement. 3. The combination with a. switch. stand having a notchedtable, and a swinging operating lever shiftable into or out of thenotches, of means for locking the lever in its inoperative positioncomprising a key actuated oscillat-able arm, an obstructing membercarried by said armand normally dismember when in its inoperativeposition,

posed in a locking position in the' path of movement ofthelever to anoperative position, and an abutment withwhich' said oh structing memberengages when disposed in the path of movement of the lever, saidobstructing member when shifted out of its obstructing position beingshifted away from the abutment.

4. The combination with a switch stand having a notched table and aswinging operating lever shiftable into or out of the notches, anobstructing member movable into position between the lever andsaid'abutment and in the path of movement of the lever to its operativeposition and keyactuated means for shifting said obstructing member outof its obstructing position and away from the abutment.

5. The combination with a switch stand having a notched table and aswinging operating lever shiftable into or out of the notches, of meansfor locking the lever from movement including an arm, an abutmentdisposed in spaced relation to the lever, an obstructing member carriedon the arm and shiftable with the arm into a position against saidabutment and in the path of movement of the lever to its operativeposition, and key actuated means for oscillating the arm to carry theobstructing member out of its obstructing position, said obstructingmember being loosely mounted for independent limited shifting movementupon said arm. n

6. The combination with a switch stand having a notched table and aswinging operating lever shiftable into or out of the notches, of meansfor locking the lever, from movement including an arm, an abutmentdisposed in spaced relation to the lever, an annular obstructing membercarried upon said arm and in a plane parallel to the plane of theobstructing member into a position against said abutment and in the pathof movement of the lever to its operative position, and key actuatedmeans for oscillating the arm to carrythe obstructing member out of itsobstructing position."

7. The combination with an operating member movable into or out of aninoperative position, of means for preventing movement of the memberfrom its inoperative position including a rigid abutment disposed inspaced relation to the operating member when in its inoperativeposition, a key actuated oscillatable arm, and an obstructing memberloosely carried by said arm and shiftable thereby into a lockingposition in the path of movement of the lever and between the operatingmember and said abutment, the obstructing member being loosely mountedupon said arm to permit the obstructing member to sustain shock withouttransmitting it to the key actuated mechanism. V T in 8. The combinationwith a switch stand having a notched table, a blockhead mounted on thetable for rotary movement, a lever hinged to the extremity of theblockhead for movement into or out of such notches, said lever having anextension at right angles to the lever, a housing mountednpon theblockhead above the pivotal axis of the lever, an obstructing memberdisposed within the housing and movable into position behind saidextension of the lever and in this position preventing the lever fromshifting to a horizontal position out of said notches,

a weight operatively engaging said obstruct 9. The combination with aswitch stand 7 having a notched table, a blockhead mounted upon thetable, an operating lever pivoted upon the table for vertical movementand shiftable into or out of said notches, of means for holding thelever in a vertical position and in engagement with one of saidnotchesincluding a housing mounted upon the blockhead above the pivotalaxis of the lever and having a keyhole, an obstructing memberoscillatably mounted within the housing and normally disposed in thepath of movement of the lever, an abutment forming part of the housingand against which said obstructing member bears when in its obstructingposition, said obstructing member moving away from the abutment whenshifted out of its obstructing position, a weight disposed within thehousingand normally locking the obstructing member from movement awayfrom its obstructing position, a keyhole guard swingingly mounted uponthe exterior of the housing and normally closing the keyhole and beingyieldingly held in its closing position by said weight, a movement ofthe keyhole guard to uncover the keyhole acting to partially lift theweight and thereby almost release the obstructing member, and arotatable keyactuated member dlsposed within the housing a and adaptedwhen rotated by the key to first engage the weight to entirely free itfrom its engagement with the obstructing member and then acting tooscillate the obstructing member from its obstructing position.

710 The combination with a switch stand having a notched table, ablockhead mounted thereon for swinging movement, a lever pivoted to theblockhead for pivotal move ment and normally disposed in one of saidnotohes,of means preventing the lever from being shifted out of one ofsaid notches ineluding an abutment, an obstructing member shiftable intoor out of a position between said lever and the abutment and when insuch position preventing movement of the lever, and key actuated meansfor shifting said obstructing member into or out" of its obstructingposition, the key actuated means and the obstructing member being soconstructed as to permit the obstructing member to sustain shockswithout transmitting them to the key actuated mechanism.

11. A switch stand lock including a housing adapted to-be applied to aswitch stand and having a keyhole, the under face of the housing beingopen to permit the movement of the switch stand lever therethrough, andkeyactuated mechanism mounted within the housing and including a switchlever looking member normally disposed in a locking position but adaptedto beshifted to a raised position, a key actuated member disposed withinthe housing behind said keyhole and having spaced lugs adapted tooperatively engage the switch lever locking -member a nd shift-it,thelugs being spaced a sufficient distance apart to permit a limitedrotative movement of the key actuated mem-' ber relative to theswitchlever locking member means normally locking the switch le-1 ver lockingmember from movement away from its locking position, and means car-'ried by the key actuated member contacting with said last named locking-member and shifting it from its locking position before one of saidlugs operatively engages said first named locking memberto retract-it.

12. The combination with'a switch stand having a notched table, ablockhead mounted istructing member out of the thereon for oscillation,an operating lever pivoted to theblockhead and having an extensionbeyond the pivotal aXis of the lever, said lever being engageable in thenotches when depressed, of means for preventing the lever being raisedfrom the notches including a housing mounted upon the blockhead andhaving a keyhole, an arm 'pivotally mounted for swinging movementwithin'the housing, an obstructing member carried by the arm andnormally disposed in a position operatively bearing against one wall ofthe housing and in the path of movement of the lever as it moves to itshorizontal position, and key actuated means within the housing foroscillating said arm to carry said obment of the lever. 7

13. The combination with a switch stand having a notched table,a-blockl1ead-mounted thereon for oscillation, an operating lever pivotedto the blockhead andhaving an extension beyond the pivotal axis of thelever, said lever being engageable inthe notches when depressechof meansfor preventing the lever being raised from the notches including a"housing 'mounted 5 upon path ofmovep housing having a keyhole, a shieldpivotally tal position, means for locking the arm with the member in itsobstructing position, and key actuatedmeans for unlocking said look ingmeans andthen upon a further rotation of the keycarryingthe arm and theobstructing member out of its obstructing position. v

. ll. The combination with a switch stand having a notched table, ablockhead oscillatably mounted thereon and a swinging operating levershiftablednto or out of the notches, of means preventing-movement of thelever out of'the notches comprisingv an oscillatable key actuated arm,an annular obstructing member looselysupported upon said arm, and anabutment against which the annular member bears at onepoint, the armbeing normally in aposition where the annula-rmemben is disposed in thepath of movement ofthe'i lever and between said lever and the abutment.

15. In a switch look, a housing having a keyhole, locking mechanismwithin the house ing, a shield pivoted upon the housing on the outerface thereofbut normally closing said keyhole, aweight resistingmovement of the locking mechanism and operatively conneoted to saidshield to urge it to a closed position over the keyhole, said operativecon-"- nections causing the lifting'of .the weight from a positionreleasing the locking mechanism when the shield is shifted to uncoverthe keyhole. a

16. In a. switch look, a housing having a keyhole, a shieldpivoted uponthe outer face i of the housing and normally disposed over the keyhole,a locking mechanism disposed within the housing, a weight disposedwithin the housing and having a "shoulder normally engaging thelockingmechanism to prevent any actuation thereof, and an operativeconnection between the shield and said weight whereby a shifting of theshield in one direction will lift the weight and a re- 5 lease of theshield will release the weight and cause the weight to shift the shieldto its closed position.

17. In a lockof the character described, a'{

mounted upon the outer face of the housing lockin'g'said key actuatedmechanism from normally disposed over said keyhole, key actuated lockingmechanism disposed with inthe housing, a weight disposed within theactuation, and an operative connection between the shield and weightwhereby a shiftingof the shieldiingamdirectionto dised for oscillation,of means for preventing the oscillation of said member comprising ahousing disposed over the path of movement of said member, the housinghaving a key hole and an inwardly extending abutment, a key actuated armdisposed within the housing, an obstructing member carried upon said armand movable into or out of engagement with said abutment, saidobstructing member'when it is in its normal position being disposed inthe path of movement of the piv oted member and between the pivotedmemher and the abutment, and key actuated means for shifting saidobstructing member out of its position in said path of movement and outof its abutment engaging position.

19. In a lock of the character described, a housing having a keyhole, aspindle within the housingextending in line with the keyhole, an armoscillatably mounted on the spindle and'carrying an obstructing member,a head mounted to rotate with said arm and having a detent face atoneend and a laterally projecting lug at the other end, a

locking weight having a detent face normally engaging with the firstnamed detent face and resisting any movement thereof, and a key actuatedmember mounted on said spindle and having means for engaging said weightand lifting it from its engagement with the face on's'aid head andhaving means ;to engage the lug on said headto thereby rotate the headand arm and shift the obstructing member from its obstructing posi tion.-r

20. The combination'with a switch stand having a notched table,ablockhead oscillatably mounted thereon and an operating le' ver pivotedto the blo'ckhead for movement into or out of said notches,said leverextending beyond its pivotal axis, of a housing mounted on the blockheadand extending over the path of movement of the extension of the lever,therearend of the housing having an abutment projectingtoward the leverand one face of the housing having a keyhole, a key spindle projectingfrom one wall of the housing toward the; keyhole and in aline-' merittherewith, a-tubular shaft mounted upon the key spindle and having anarm at one end and a sector-shaped head at the other, the outer end ofthe arm carrying a substantially [elliptical head, the sector shapedhead being formed to provide a detent face at one end and at the otherhaving a laterally projecting arcuate lug, an annular obstructing membercarried upon the 18. The combination with a member pivotelliptical headand movable with it into or out of a position against said abutment'andsaid spindle and between the abutment and the extension of the leverwhen the lever is disposed within the notch, a curved Weight pivoted atone end within the housing and having a detent face normally engagingwith the detent face on the sector-shaped head to prevent a rotation ofsaid tubular shaft, and a member mounted upon the spindle for rotationtherearound having an arcuate concentrically extending arm adapted whenthe member is rotated to engage said weight and lift it out ofengagement with the sector-shaped head and having a lug engageable withthe arcuate lug onthe head, the arcuate arm on said member beingdisposed in a plane outward of the lug, and a key insertible through thekeyhole and adapted to engage the end of the arcuate arm to thereby turnthe member and shift a keyhole, a key spindle projecting from one wallof the housing toward the keyhole and in alinement therewith, a tubularshaft mounted upon the key spindle and having an arm at one end anda'sector-shaped head at the other, the outer end of thearm carrying asubstantially elliptical head, the sectorshaped head being formed toprovide a detent face at one end and at the other having a laterallyprojecting arcuate lug, an annular obstructing member carried upon theelliptical. head and movable with it into or out of a position againstsaid abutment and said spindle and between the abutment and theextension of the lever'when the lever is disposed within the notch, acurved weight pivoted at one-end within the housing and having a detentface normally engaging with the detent face on the sector-shaped head toprevent a rotation of said tubular shaft, a member mounted upon thespindle for rotation therearound having an arcuate concentricallyextending arm adapted when the member is rotated to engage said weightand lift it out of engagement with the sectorshaped head and having alug engageable .with the arcuatelug on the head, the arcuate arm on saidmember being disposed in a plane outwardv ofthe lug, a key insertible'through the keyhole and adapted to engage thelendlof the arcuate arm tothereby turn the member and shift the head, the tubular shaft, the arm,and the'obstructing member, a shield pivoted upon the keyhole face ofthe housing on the exterior thereof and having an inwardly extendingpin, the housing being slotted to permit the passage of the pin, saidweight having a nose normally bearing upon the pin to urge the shieldinto a position over the keyhole, a rotation of the shield acting topartly lift the weight.

22. A switch stand lock comprising ahousing having a keyhole, anoscillatable arm mounted within thehousing and carrying a lockingmember, said arm having a shoulder, a weight having a shoulder normallyengaging the first named shoulder and preventing said arm fromoscillating to an unlocking position, a key actuated member rotatablymounted opposite the keyhole and having limited oscillative movementrelative to the arm, and means carried by said' member engaging theweight upon a rotation of the member in one direction to thereby carrythe weight away from the shoulder on the arm and permit the retractionof said locking member.

23. A switch stand lock, a housing having a keyhole, a swinging keyholeshield coacting therewith, an oscillatable arm mounted within thehousing and carrying a locking member, a weight pivotally mounted withinthe housing and operatively engaging the keyhole shield to yieldinglyurge it to its closed position, said weight having means locking the armfrom oscillation in a direction to retract the locking member, anoscillatably mounted key actuated member dis- .posed immediately.opposite the keyhole,

signature.

NOAH J. BEOKNER.

